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Morris JK, Bergman JEH, Barisic I, Wellesley D, Tucker D, Limb E, Addor MC, Cavero-Carbonell C, Matias Dias C, Draper ES, Echevarría-González-de-Garibay LJ, Gatt M, Klungsøyr K, Lelong N, Luyt K, Materna-Kiryluk A, Nelen V, Neville A, Perthus I, Pierini A, Randrianaivo-Ranjatoelina H, Rankin J, Rissmann A, Rouget F, Sayers G, Wertelecki W, Kinsner-Ovaskainen A, Garne E. Surveillance of multiple congenital anomalies; searching for new associations. Eur J Hum Genet 2024; 32:407-412. [PMID: 38052905 PMCID: PMC10999451 DOI: 10.1038/s41431-023-01502-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 10/09/2023] [Accepted: 11/16/2023] [Indexed: 12/07/2023] Open
Abstract
Many human teratogens are associated with a spectrum of congenital anomalies rather than a single defect, and therefore the identification of congenital anomalies occurring together more frequently than expected may improve the detection of teratogens. Thirty-two EUROCAT congenital anomaly registries covering 6,599,765 births provided 123,566 cases with one or more major congenital anomalies (excluding chromosomal and genetic syndromes) for the birth years 2008-2016. The EUROCAT multiple congenital anomaly algorithm identified 8804 cases with two or more major congenital anomalies in different organ systems, that were not recognized as part of a syndrome or sequence. For each pair of anomalies, the odds of a case having both anomalies relative to having only one anomaly was calculated and the p value was estimated using a two-sided Fisher's exact test. The Benjamini-Hochberg procedure adjusted p values to control the false discovery rate and pairs of anomalies with adjusted p values < 0.05 were identified. A total of 1386 combinations of two anomalies were analyzed. Out of the 31 statistically significant positive associations identified, 20 were found to be known associations or sequences already described in the literature and 11 were considered "potential new associations" by the EUROCAT Coding and Classification Committee. After a review of the literature and a detailed examination of the individual cases with the anomaly pairs, six pairs remained classified as new associations. In summary, systematically searching for congenital anomalies occurring together more frequently than expected using the EUROCAT database is worthwhile and has identified six new associations that merit further investigation.
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Affiliation(s)
- Joan K Morris
- Population Health Research Institute, St George's, University of London, London, UK.
| | - Jorieke E H Bergman
- Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ingeborg Barisic
- Children's Hospital Zagreb, Centre of Excellence for Reproductive and Regenerative Medicine, Medical School University of Zagreb, Zagreb, Croatia
| | - Diana Wellesley
- Clinical Genetics, University of Southampton and Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, UK
| | - David Tucker
- Congenital Anomaly Register & Information Service for Wales (CARIS) Public Health Knowledge and Research, Public Health Wales, Swansea, Wales, UK
| | - Elizabeth Limb
- Population Health Research Institute, St George's, University of London, London, UK
| | - Marie-Claude Addor
- Department of Woman-Mother-Child, University Medical Center CHUV, Lausanne, Switzerland
| | - Clara Cavero-Carbonell
- Rare Diseases Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, Valencia, Spain
| | - Carlos Matias Dias
- Epidemiology Department, National Institute of Health Doutor Ricardo Jorge, Lisboa, Portugal
| | - Elisabeth S Draper
- Department of Population Health Sciences, Georg Davies Centre, University of Leicester, Leicester, UK
| | | | - Miriam Gatt
- Malta Congenital Anomalies Registry, Directorate for Health Information and Research, Guardamangia, Malta
| | - Kari Klungsøyr
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
- Division of Mental and Physical Health, Norwegian Institute of Public Health, Bergen, Norway
| | - Nathalie Lelong
- Université Paris Cité, CRESS, Équipe de recherche en épidémiologie obstétricale périnatale et pédiatrique (EPOPé), INSERM, INRA, Paris, France
| | - Karen Luyt
- South West Congenital Anomaly Register, Bristol Medical School, University of Bristol, Bristol, UK
| | - Anna Materna-Kiryluk
- Polish Registry of Congenital Malformations, Chair and Department of Medical Genetics, University of Medical Sciences, 61-701, Poznan, Poland
| | - Vera Nelen
- Provincial Institute for Hygiene, Antwerp, Belgium
| | - Amanda Neville
- Center for Clinical and Epidemiological Research, University of Ferrara, Ferrara, Italy
| | - Isabelle Perthus
- Auvergne Registry of Congenital Anomalies (CEMC-Auvergne), Department of Clinical Genetics, Centre de Référence des Maladies Rares, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France
| | - Anna Pierini
- Unit of Epidemiology of Rare diseases and Congenital anomalies, Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | | | - Judith Rankin
- Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Anke Rissmann
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University-Magdeburg, Magdeburg, Germany
| | - Florence Rouget
- Brittany Registry of Congenital Anomalies, CHU Rennes, Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000, Rennes, France
| | - Geraldine Sayers
- Health Intelligence, Research and Development Health Service Executive, Dublin, Ireland
| | | | | | - Ester Garne
- Department of Paediatrics and Adolescent Medicine, Lillebaelt Hospital, University Hospital of Southern Denmark, Kolding, Denmark
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Bergman JEH, Perraud A, Barišić I, Kinsner-Ovaskainen A, Morris JK, Tucker D, Wellesley D, Garne E. Updated EUROCAT guidelines for classification of cases with congenital anomalies. Birth Defects Res 2024; 116:e2314. [PMID: 38361485 DOI: 10.1002/bdr2.2314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 01/18/2024] [Accepted: 01/26/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Precise and correct classification of congenital anomalies is important in epidemiological studies, not only to classify according to etiology but also to group similar congenital anomalies together, to create homogeneous subgroups for surveillance and research. This paper presents the updated EUROCAT (European surveillance of congenital anomalies) subgroups of congenital anomalies and the updated multiple congenital anomaly (MCA) algorithm and provides the underlying arguments for the revisions. METHODS The EUROCAT methodology is described. In addition, we show how we validated the revised EUROCAT subgroups and MCA algorithm, which are both based on the International Classification of Diseases (ICD10/ICD9) codes. RESULTS The updated EUROCAT subgroups and the updated MCA algorithm are described in detail and the updated version is compared to the previous versions. CONCLUSION The EUROCAT subgroups and MCA algorithm provide a standardized and clear methodology for congenital anomaly research and epidemiological surveillance of congenital anomalies in order to facilitate the identification of teratogenic exposures and to assess the impact of primary prevention and prenatal screening policies. The EUROCAT subgroups and MCA algorithm are made freely available for other researchers via the EUROCAT Database Management Software.
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Affiliation(s)
- Jorieke E H Bergman
- University of Groningen, University Medical Center Groningen, department of Genetics, Groningen, The Netherlands
| | - Annie Perraud
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Ingeborg Barišić
- Children's Hospital Zagreb, Centre of Excellence for Reproductive and Regenerative Medicine, Medical School University of Zagreb, Zagreb, Croatia
| | | | - Joan K Morris
- Population Health Research Institute, St George's University of London, London, UK
| | - David Tucker
- Congenital Anomaly Register and Information Service for Wales (CARIS), Public Health Wales, Swansea, UK
| | | | - Ester Garne
- Department of Paediatrics and Adolescent Medicine, Lillebaelt Hospital, University Hospital of Southern Denmark, Kolding, Denmark
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Schraw JM, Benjamin RH, Shumate CJ, Canfield MA, Scott DA, McLean SD, Northrup H, Scheuerle AE, Schaaf CP, Ray JW, Chen H, Agopian A, Lupo PJ. Patterns of co-occurring birth defects in children with anotia and microtia. Am J Med Genet A 2023; 191:805-812. [PMID: 36541232 PMCID: PMC9928897 DOI: 10.1002/ajmg.a.63081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022]
Abstract
Many infants with anotia or microtia (A/M) have co-occurring birth defects, although few receive syndromic diagnoses in the perinatal period. Evaluation of co-occurring birth defects in children with A/M could identify patterns indicative of undiagnosed/unrecognized syndromes. We obtained information on co-occurring birth defects among infants with A/M for delivery years 1999-2014 from the Texas Birth Defects Registry. We calculated observed-to-expected ratios (OER) to identify birth defect combinations that occurred more often than expected by chance. We excluded children diagnosed with genetic or chromosomal syndromes from analyses. Birth defects and syndromes/associations diagnosed ≤1 year of age were considered. We identified 1310 infants with non-syndromic A/M, of whom 38% (N = 492) were diagnosed with co-occurring major defects. Top combinations included: hydrocephalus, ventricular septal defect, and spinal anomalies (OER 58.4); microphthalmia and anomalies of the aorta (OER 55.4); and cleft lip with or without cleft palate and rib or sternum anomalies (OER 32.8). Some combinations observed in our study may represent undiagnosed/atypical presentations of known A/M associations or syndromes, or novel syndromes yet to be described in the literature. Careful evaluation of infants with multiple birth defects including A/M is warranted to identify individuals with potential genetic or chromosomal syndromes.
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Affiliation(s)
- Jeremy M. Schraw
- Department of Pediatrics, Baylor College of Medicine, Houston, TX USA
| | - Renata H. Benjamin
- Department of Epidemiology, Human Genetics & Environmental Sciences, UTHealth School of Public Health, Houston, TX USA
| | - Charles J. Shumate
- Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, TX USA
| | - Mark A. Canfield
- Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, TX USA
| | - Daryl A. Scott
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX USA
| | - Scott D. McLean
- Department of Pediatrics, Baylor College of Medicine, Houston, TX USA
| | - Hope Northrup
- Department of Pediatrics, Division of Medical Genetics, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth), Houston, TX USA
- Children’s Memorial Hermann Hospital, Houston, TX USA
| | - Angela E. Scheuerle
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX USA
| | | | - Joseph W. Ray
- Department of Pediatrics, Division of Medical Genetics and Metabolism, University of Texas Medical Branch, Galveston, TX USA
| | - Han Chen
- Department of Epidemiology, Human Genetics & Environmental Sciences, UTHealth School of Public Health, Houston, TX USA
- Center for Precision Health, School of Biomedical Informatics, University of Texas Health Science Center at Houston, Houston, TX USA
| | - A.J. Agopian
- Department of Epidemiology, Human Genetics & Environmental Sciences, UTHealth School of Public Health, Houston, TX USA
| | - Philip J. Lupo
- Department of Pediatrics, Baylor College of Medicine, Houston, TX USA
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Benjamin RH, Mitchell LE, Scheuerle AE, Langlois PH, Canfield MA, Drummond-Borg M, Nguyen JM, Agopian AJ. Identifying syndromes in studies of structural birth defects: Guidance on classification and evaluation of potential impact. Am J Med Genet A 2023; 191:190-204. [PMID: 36286533 DOI: 10.1002/ajmg.a.63014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/25/2022] [Accepted: 09/14/2022] [Indexed: 12/14/2022]
Abstract
Structural birth defects that occur in infants with syndromes may be etiologically distinct from those that occur in infants in whom there is not a recognized pattern of malformations; however, population-based registries often lack the resources to classify syndromic status via case reviews. We developed criteria to systematically identify infants with suspected syndromes, grouped by syndrome type and level of effort required for syndrome classification (e.g., text search). We applied this algorithm to the Texas Birth Defects Registry (TBDR) to describe the proportion of infants with syndromes delivered during 1999-2014. We also developed a bias analysis tool to estimate the potential percent bias resulting from including infants with syndromes in studies of risk factors. Among 207,880 cases with birth defects in the TBDR, 15% had suspected syndromes and 85% were assumed to be nonsyndromic, with a range across defect types from 28.5% (atrioventricular septal defects) to 98.9% (pyloric stenosis). Across hypothetical scenarios varying expected parameters (e.g., nonsyndromic proportion), the inclusion of syndromic cases in analyses resulted in up to 50.0% bias in prevalence ratios. In summary, we present a framework for identifying infants with syndromic conditions; implementation might harmonize syndromic classification across registries and reduce bias in association estimates.
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Affiliation(s)
- Renata H Benjamin
- Department of Epidemiology, Human Genetics, and Environmental Sciences, UTHealth School of Public Health, Houston, Texas, USA
| | - Laura E Mitchell
- Department of Epidemiology, Human Genetics, and Environmental Sciences, UTHealth School of Public Health, Houston, Texas, USA
| | - Angela E Scheuerle
- Department of Pediatrics, Division of Genetics and Metabolism, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Peter H Langlois
- Department of Epidemiology, Human Genetics, and Environmental Sciences, UTHealth School of Public Health at Austin, Austin, Texas, USA
| | - Mark A Canfield
- Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, Texas, USA
| | - Margaret Drummond-Borg
- Birth Defects Epidemiology and Surveillance Branch, Texas Department of State Health Services, Austin, Texas, USA
| | - Joanne M Nguyen
- Department of Genetics, Cook Children's Hospital, Fort Worth, Texas, USA
| | - A J Agopian
- Department of Epidemiology, Human Genetics, and Environmental Sciences, UTHealth School of Public Health, Houston, Texas, USA
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